This article traces the introduction and results of introducing non-native shrimp to the waters of northern Montana. The effect on Flathead Lake, the largest natural lake in the US west of the Mississippi, is an illustrative story of expanding, unanticipated consequences .

A recent study highlights how the introduction of the opossum shrimp in the 1960s and 1970s created a ripple effect in Flathead Lake that continues today. It’s a thorough survey of how a single wildlife management decision can change an entire ecosystem.